Re: [galaxy-dev] "Merging tabular data tables with non-matching columns is not allowed"

Hi Peter vH, I wonder if adding columns is not supported - because some tools would define the table without the extra column? You might have to define a new data table instead (with largely the same content). But to be clear, I am not an expert in this area of Galaxy. However, it does seem the IUC could lay out some *.loc file best practises for tool authors. There is currently a TODO entry here: https://galaxy-iuc-standards.readthedocs.io/en/latest/best_practices/tool... Peter C. On Mon, Sep 17, 2018 at 10:56 PM Peter van Heusden <pvh(a)sanbi.ac.za&gt; wrote: > A bit more tracing leads me to suspect that what is happening is that a > merge is being called here: > > > https://github.com/galaxyproject/galaxy/blob/dev/lib/galaxy/tools/data/__... > > from: > > > https://github.com/galaxyproject/galaxy/blob/dev/lib/tool_shed/tools/data... > > i.e. the toolshed maintains an in-memory copy of tool-data tables and if > the list of columns in an incoming tool-data table is not the same as the > in-memory version the error I saw happens. > > Which leaves me with the question: how is one meant to update the column > list of a tool data table? > > Peter > > >